I usually memorize the spelling and pronunciation, but often I do not know the pronunciation. I've had trouble remembering certain names on account of them being almost or just barely what could be considered a household names. Otherwise, names that are neither English, French, Spanish, Portuguese, Italian, German, Dutch, Danish, Finnish, Swedish, Norwegian, Polish, Chinese, Korean, Japanese, Hebrew nor Hindi, can be difficult for me to remember how to spell, often because of the odd way that they may be "Romanized". I'm not sure of my comfort level with Greek, Russian and Algonquian; which for the latter, it would be odd to be uncomfortable, since I inhabit a region that used to be inhabited by people who spoke Algonquian languages, so tons of counties, roadways, lakes and rivers are named in Romanizations of names from those languages. The key thing to understand is that big names are like big words, in that big words are just sequences of little words.

My problem is that your choices are almost all name of an actor from another country. I mean that for them the name is probably easy to write. For example, the real name of Joseph Staline is this( Iossif Vissarionovitch Djougachvili). You should add him because he is on IMDB. Also,

I think Peter meant stars who have a name that is difficult to spell, so :

a/ they've got to be famous...b/... as actorsc/ and the problem comes from the spelling, not much the pronunciation so that being fluent in a specific language doesn't give you an edge (or maybe a small one)

I think it's a good poll and there's no need to get too purist about it, pretty sure there's an actor somewhere named Adföjerlfl Moniolikrxlkl, but what would be the point of adding him?

I concede that it's hard to set any strict criteria for the list. It's based on other lists from English-language media and suggestions from this thread, and of course they should be famous names from film and television. It is aimed at the IMDb audience, which is mostly English-speaking, and based on the spellings IMDb lists. Let's not even mention non-Western alphabets.

Albstein: Some of the accented letters of the Polish alphabet are not available in IMDb's main character set, ISO-Latin-1. Probably until IMDb implements Unicode, it won't be possible to display the "L with stroke" or "S with acute accent" correctly. And Unicode is a very long-term project for IMDb:

Ideally all data should be presented using its native character sets/
pictograms. Technically this is not possible though with current
widespread software for web access, e-mail and operating systems in general.

In the future there will be a new huge standardized 16 bit character set
called Unicode. It will offer the capability to freely combine Japanese
Kanji with ISO 1 text and Hindi, for example. We will use it as it becomes
widely available and supported by the industry.